KENNEBUNK POLICE OFFICERS ARE TRAINING FOR THE WORST CASE SCENERIO...AN ACTIVE SHOOTER, INSIDE A SCHOOL. W-M-T-W NEWS 8'S LINDSAY LIEPMAN TAKES US TO THE MIDDLE SCHOOL, WHERE POLICE CONFRONTED WHAT WOULD BE A DEVASTATING SITUATION. WHILE THE KIDS ARE OUT ON SCHOOL BREAK... HERE'S THE TRAINING SCENARIO -- A SHOOTER IS ON THE LOOSE IN THE GYM AT THE MIDDLE SCHOOL OF THE KENNEBUNKS. "it's as realistic as it can be." IT'S A SIMULATION WITH TEACHERS PLAYING THE ROLE OF VICTIM AND POLICE OFFICERS GETTING SOME VALUABLE TRAINING. "this type of activity could happen anywhere from a large city to a small community." CHIEF BOB MACKENZIE SAYS IN THE PAST, POLICE WOULD WAIT FOR A SWAT TEAM BEFORE ENTERING AN ACTIVE SHOOTER SITUATION. BUT NOW...EVERY SECOND COUNTS. "we train differently now. We train that you respond, you go in, you eliminate the threat." 1ST GRADE TEACHER SHARON SIROIS SAYS HER SCHOOL HAS A COMMAND TEAM, HOLDS REGULAR TRAINING AND HAS BEEFED UP SECURITY ..JUST IN CASE. "i've been teaching 29 years and there has been quite a change over the years and it is sad that this is part of teaching now." MORE THAN 20 OFFICERS PARTICIPATED IN TODAY'S TRAINING... BUT CHIEF MACKENZIE SAYS IT TAKES MORE TO STOP VIOLENCE IN OUR SCHOOLS. "It takes the community to come together. It takes that phone call. Don't be afraid to call the police and say you know what I noticed something strange, we'd rather be safe than sorry." LL WMTW NEWS 8.